wǒ zuì jìn mǎi le yí gè biàn xié shì chōng yá qì，chū mén lǚ xíng de shí hòu yě néng fāng biàn de qīng jié kǒu qiāng

我最近买了一个便携式冲牙器，出门旅行的时候也能方便地清洁口腔。

I recently bought a portable oral irrigator, which makes it convenient to clean my mouth when traveling.